问题
解答题
怎样简便就怎样算:
|
答案
(1)24×(
+3 8
+1 6
),5 12
=24×
+24×3 8
+24×1 6
,5 12
=9+4+10,
=23;
(2)
×7÷11 12
,7 12
=
×7×11 12
,12 7
=11;
(3)2.8×(
+1 7
),3 28
=2.8×
+2.8×1 7
,3 28
=0.4+0.3,
=0.7;
(4)23×
+14×14 39
,16 39
=23×
+16×14 39
,14 39
=(23+16)×
,14 39
=39×
,14 39
=14;
(5)101×
,99 102
=(102-1)×
,99 102
=102×
-99 102
,99 102
=99-
,99 102
=98
;1 34
(6)6÷
-3 10
÷6,3 10
=20-
,1 20
=19
.19 20